William mason



(No Model.)

- W. MASON.

LOCK POR FIRE'ARMS.

No. 260,586. Patented July 4, 1882.

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UNITED STATES PATENT Ferca. v

WILLIAM MASON, OF HARTFORD, CONNECTICUT, AssIeNOn To TI-TnCOLTs PATENTFIRE-ARMS MANUFACTURING COMPANY, ou SAME PLACE.

LOCK FOR Fine-ARMS.

SPECIFICATIONforming part of Letters Patent No. 260,586, dated July 4,1832.

Application tiled March 25, 1882. (No model.)

To all 'whom t may concern:

Beit known that I, WM. MASON, of Hartford, in-the county of HartfordandState of Connecticut, haveinvented a new Improvem en t in Locks forFire-Arms; and -I do hereby declare the following, when taken inconnection with accompanying drawings and the letters of referencemarked thereon, to be a full, clear, and exact description of the same,and which 1o said drawings constitute part of this specilication, andrepresent, in

Figure 1, a sectional side view; Fig. 2, the same, showing the parts asat the point of re-l leasing the hammer; Fig. 3, detached parts.

` This invention relates to an improvement in .-.locksfor' tha-telassof-re-armsin which the barrels are hinged so as to tilt 4up at thebreech toopen thechambers, commonly called breakdown arms, andparticularly to the class of u' zo locks in which the hammer is entirelywithin i the receiver, commonly called concealed hammers,7 parts of theinvention being applicable to other classes of arms, the object being as imple construction whereby the mainsprin gserves 2' 5 as thetrigger-spring and also to produce the retreat, or,asitis commonlycalled, rebouud, of the hammerafter it has given its blow, and wherebythe power to produce the rebound is not applied until after the strokeof the hammer is' completed, and therefore does not de :tract from'theforce of the blow; and the further object of the invention is to lockthe triggers so that the hammer cannot be released by applying .thetrigger until the barrels are 3 5 properly locked; and the inventionconsists inthe details of construction', as hereinafter described, andmore particularly recited in the claims. f

A is the frame, of usual form, toorwell known' 4o to require descriptionin this specication.

B isthe hammer, hung upon a pivot, a, within the frame, and so that itsnose b will strike through an aperture in the recoil-plate in the usualmanner. The mainsprin g extendsforward in the frame `in a recess, C, onearm, d, hung to a link, c, engaged with the hammer in rear of its pivot,as at f, the other end taking a bearing, so that the lift of the springis in rear of the pivot,

and consequently forces the nose of the hain- 5o mer forward.

D is the trigger, hung` upon a pivot, g, and, above'its pivot, as at h,connected by a link, with a rocking lever, E, hung at To this` rockinglever E the sear or trip F is hung, as at l, and extends forward so asto engage a notch, m, on the hammer below its pivot; Hence a pull uponthe trigger' will force the sear F forward, as from the position in Fig.1 to that in Fig. 2, and the scar, being engaged 6o with the hammer,will also turn the hammer to the position seen in Fig. 2.

Forward ofthe hammer a three-armed lever, H, is hung upon a pivot, n.One end, o, of the mainspringbears upon the arm p forward of thepivot/n, and from the second arm, r, a link, I, extends, and is pivotedto-the scar F, as at s, so that as the trigger is pulled and the scarmoved forward, as before described, it

turns the arm r of the lever H forward and raises the arm p, whichcorrespondingly raises the end o of the main'spring bearing thereon. Atthe same time the hammer dra-ws down the other end of the mainspring,all to the position seen in Fig. 2. 75

The third arm, t, of the lever l1 comes in contact with the forward endof the sear F at about the time the hammer has reached its full-cockedposition. Then by the continued pull upon the trigger the arm tforcesthe sear 8o F downward from its engagement with the hammer and soas to free the hammer, as seen in Fig. 3, and thus freed the hammerflies forward under the full force of the mainspring and before it ispossible for the operator to re 85 lieve the trigger from the force ofhis linger which pulled it.

As soon after the discharge of the hammer as the operator releases thetrigger from the force of his linger the end o of the mainspring 9o actsupon the arm p of the lever H, turning that arm downward and the arm iforward, which forces the sear backward for re-engagement with the notchofthe hammer and the trigger to its normal position, as seen in Fig. 1,and as the lever H approaches its extreme released position a shoulder,u, engages a corresponding shoulder, fw, on the hammer forward of itspivot, and as it completes its movei ment the said lever H forces thehammer backward to take Aits no'se back from its most forward position,as indicated in broken lines, Fig. 3, to its nor l position, as seen inFig. 1. By this arrangement and combination of parts the mainspring isutilized to operate all parts of the lock.

The pivot s of the link I is above the pivot lof the sear. Hence therearward action ofthe link I induced by the mainspring tends to forcethe forward end of the sear upward to- `ward the hammer, and the link t,engaged with the trigger above its pivot, communicates the power of themainspring to force the {ingerpiece of the trigger forward.

The locking mechanism to secure the barrels i consistsof the usual bolt,as seen in broken lines, Fig. 1. To its head Il at the-rear and to thebolt a longitudinal movement. is imparted by the lever M through thevertical cam-'shaft Y N, in the'usual manner-that is to say, when thelever M lies upon the tang of the frame, as seen in Fig. 1, the bolt isin its locked condition and the barrels engaged. By swinging the lever Mto one side the'bclt is withdrawn by means of the cam on thelever-shaftin the usual manner too well known to require detailed description.

Upon the pivot g of the triggers (or it may he at any other point) alever, It, is hung, one arm, T, of which extends up to a position inrear of the bolt L, as seen in Figs. l and 2, and so that when thebarrels are properly secured and the bolt L in its locking position thearm T will lie close in rear of the bolt, as

seen in Fig. 2; but when the bolt is thrown back, as indicated in brokenlines, Fig. 1, to release the barrels, the arm 'I ofthe lever will becorrespondingly turned backward, as seen in Fig. 1. The other arm, 2, ofthe lever R is engaged with a latch-lever, 3, hung upon a pivot, 4, inrear of the trigger.I One arm, 5, of the said lever, extending rearward,is hung to a finger-piece, 6. The other arm, 7, of the lever isconstructed of latch shape and with a shoulder, 8, and the` triggerswith a corresponding shoulder, 9.l ,i

. When the bolt is in its locked position, as seen in Fig. 2;the arm Tof the lever R is Iorward and the lshoulder 8 of the arm 7 of the. lever3 is sol far above the shoulder 9 of the trigger as to permit the freevplay of the trigger; but when the bolt is drawn backward, as seen inbroken lines, Fig. 2, it turns the lever R and brings the arm 7 of thelever 3 into engagement with. the shoulder of the triggers,

so that in that condition the pull ofthe trigger is impossible. At thesame time the engagement with the triggers is made the linger-piece 6is'thrown upward,carryingits end 10 through an opening in the tang ofthe frame, as seen in Fig. 1l This projection of the finger-piece showsthat the bolt is not in its unlocked position, hence serves asv anindicator of the proper condition of the arm for irin g.

ecosse movement of the iingerpiece cannot occur un- Y less the bolt bcforced forward into its looked position. By this arrangement, therefore,not only are the triggers locked when the 'bolt is not in its lockingposition, but the locked pcsition of the trigger and unlocked positionof the bolt are indicated to the operator by the projection of the head10 ofv the finger-piece 6 through the tang. This mechanism for lock. ingthe triggers may-be applied to other mechanisms, the invention not beinglimited to the\ particular lock herein described.

1. The combination of the hammer B,'the trigger D, the sear F inconnection with the trigger above its pivot, and arranged to engage ashoulder on the hammer below its pivot, the lever H, the mainspring C,one arm hung to the hammer in rear of its pivot, the other arm bearingupon an arm on the lever H forward of its pivot, and the link I,connecting the lever H with the sear F, substantially as described. I

2. The combination of the hammer B, the trigger D, the sear F inconnection with the trigger above its pivot, and arranged to engage ashoulder on the hammer below its pivot, the lever H, the mainspring C,one arm hung to the hammer in rear of its pivot, the other arm bearingupon an arm on the lever H for'- ward of its pivot, and the link I,connecting the lever H with the sear F, a third arm, t, of the lever H,arranged above the forward end ofthe sear to throw the sear out ofengagement during the last part of the forward movement of the Sear,substantially as described.

3.,The eombina'tionof the hammer B, the trigger D, the searF inconnection with the tri 'ger above its pivot, and arranged to engage ashoulder on the hammer below its pivot,

the lever\H, the mainsprng C, one arm hung l tothe hammer in rear of itspivot, the other arin Vbearing upon an armen theflever-E-for Y wafd of,its pivot, and the link I, connecting the'v lever H with `the sear F,the said lever con-` structed with a shoulder, u, in rear of its pivot,

and the hammer with a corresponding shoulder, lwvforward of its pivot,substantially as arm bearin g upon an arm on the leverH for-A ward ofits pivot, :md the link I, connecting 5. The combination of the bolt L,by which zo the lever H with the Sear F, a third arm, t, the barrels arelocked in their closed position,

of the lever H, arranged above the forward end the lever R, thelatch-lever 4, and linger-piece of the Sear to throw the Sear out ofengage- 6 with the trigger, substantially as and for the 5 ment duringthe last part of the forward movepurpose described.

ment of the Sear, the said lever H constructed WILLIAM MASON. with ashoulder, u, in rear of its pivot, and the i Witnesses: hammer withacorresponding shoulder, w, for- JOHN E. EARLE, ward of its pivot,substantially as described. y JOS. C. EARLE.

